Henry flad



Attest C13 (No Model.)

H. PLAD. APPARATUS FOR THE TREATMENT OF TIMBER FOR PRESERVING IT. No".253,361. Patented Feb. 7,1882.

N. PETERS, PhnloLflhbgrApher. Wnshinglnn. n.c

UNITED STATES.

HENRY FLAD, or sr, LOUIS, rssonat.

APPARATUS FOR THE- TREATMENT OF TIMBER FOR PRESERVJNG IT.

SPECIFICATION forming part of Letters Patent No. 253,361, dated February'7, 1882.

Application filed May 4, 1881. (No model) To all whom it may concern:-

Be it known that I, HENRY FLAD, of the city of St. Louis,in the State ofMissouri, have invented a certain new and useful Improvement inApparatus for the Treatment of Timber for the Preservation or Seasoningof the Same, of which the following is a ful clear, and exactdescription, reference being bad to the accompanying drawings, makingpartof this specification.

My improvement relates to a metal hoop or flat ring that is used in theformation of a suction or pressure chamber at the end of a log undertreatment; and the improvement'consists of a flat ring or hoop made ofthin steel that may be bent to conform to the periphery of the end ofthe log. The hoop has upon its side a number of bosses to prevent theedges of the ring or hoop entering the wood above a certain distance. Ithas also a nozzle for the connection of a pipe or hose.

In the drawings, Figure 1 shows the hoop and two logs in side View, thetank and skids being in section. The sinker-bars are also in section.Fig. 2 shows the hoop and contiguous part of the log in section, therest of the log in side view, and the cap part in section. Fig. 3 is inthe main a side view of the hoop, with the coupling and contiguous partof the hoop in section. This figure is on a larger scalar The flat hoopor ring consists of a short cylinder, A, of thin flexible sheet metal,(preferably steel or gun-metal,) whose edges on ter the log B at theend. The hoop is inserted-between two logs, as in Fig. 1, or between alog and a cap. This is illustrated in Fig. 2, wherethe cap consists of ablock, 0, sawed from the end of the log. To carry on the process underthe most favorable circumstances the pores at the end of the log must beopen, and where the end has become seasoned or checked, or where it isnot flat, it should be sawed off to give a fresh, fiat, and uncheckedsurface for the application of the hoop A. The disk or block 0, oranother log B may then be fitted on the other edge of the hoop, and bothedges of the hoop be made to enter the wood by pressure or blows uponthe block or log, so as to make an airtight joint between the hoop andthe faces of the wood. The hoop is very thin and flexible, so that itmay be made to accommodate itself to the periphery of the face of thelog, and may be made to enter the same near to'the margin all around,whatever the outline of the margin may be. The side of the hoop has anumber of bosses, D,-not reaching to either edge, and which serve tolimit. the distance which the edges of the hoop enter the timber.

.E is a nozzle in communication with the chamber F within the hoop, andfitted in any suitable manner for connection with a pipe or I hose, G,that leads to a suction (or force) pump. The means of connection betweenthe hose or pipe G and the nozzle consists, as shown, of a unioncoupling, H; but the hose may be made the tank containing the antisepticliqiiidtmbe" forced through the pores of the wood by the atmosphericpressure resulting from the partial vacuum in chamber F.

S are sinkeebars fixfll ififihfil g to keep tmmrsa. s- In treating shortpieces of timber-such as railway tiesthe tank may be made deep enough toreceive the timber in a vertical position. In this case the timber wouldbe so supported as to expose the lower ends to contact with the liquid,so that it may freely enter the pores. 1

The liquid may be supplied to the receiving end of the log through achamber formed by a cap applied to that endof the log and incommunication with a source of supply when suc-.

tion is applied to the other end. When the cap 0 G is used I render itimpervious to air or liquid by daubing or covering the outer end of thesame with tar or other suitable material. When the cap is not immersedpaste, mud, or other suitable material may be used to close the pores ofthe cap.

Where the liquid is applied to the log by mechanical or hydrostaticpressure no trough would be used. The liquid would be supplied to thereceiving end of the log through a chamber, F, substantially as shown inFigs. 1 and 2. The liquid would be caught in a trough at the other endof the log or logs.

The same apparatus is applicable to seasoning timber under the processdescribed in my Patent No. 231,783, of August 31, 1880.

I claim as my invention 1. The flexible metal hoop A, whose edge isfitted to enter the timber, provided with means for connection of a pipeor hose, for the purpose set forth.

2. The flexible metal hoop A, whose edge is fitted to enter the timber,provided with bosses 5 D and nozzle E, substantially as and for thepurpose set forth.

HENRY FLAD.

Witnesses:

SAML. KNIGHT, Gno. H. KNIGHT.

